It’s hard to imagine that there was a time when a high end graphics card could mine Bitcoin at a speed that was profitable. Now, the best bitcoin miners use ASIC computer chips that mine at many terahashes per second!

Note: If there’s a price from Amazon or another online retailer on a Bitcoin miner that seems to good to be true, check the listing details. There have been some listings that have slipped by and have a low listing price, and request the rest of the purchase price in a crypto.

Here’s a quick roundup of the best bitcoin miners available right now from top online retailers:

Best Bitcoin Miner Comparison

	Product	TeraHashes per Watt	Dollars per TeraHash	Price	Best Price from:
	Antminer S9 Bitcoin Miner 13.5 TH/s	0.01			In Stock at Amazon
	Antminer T9+ 10.5 TH/s	0.01	$57.05	$599.00	Now In Stock at Amazon
	Antminer S7 4.73 TH/s	0	$158.76	$750.95	Now In Stock at Amazon
	AvalonMiner 741 - 7.3 TH/s	0.01			In Stock at Amazon